Many of us would not relate the word fire-fighter to hero. A real fire-fighter swoops down on a fire and with all her/his great dexterity and skill, they put it out. Most I know don't see this label that way. They see it as major burden, as something they don't want to do (putting out fires) .... something they would rather not do in fact.
A real fire-fighter does not know where the (next) fire is going to start or when it is going to happen, but that is their job and they are ready. Most leaders I know who describe their fire-fighting role describe it in similar ways. "It is something new every day." But is it?
The question is -- is firefighting your job? Or is it a role you have grown into in your current role?
The other question is -- what does being more and more of a fire fighter tell you? What does it tell you is lacking? In your team(s)? In yourself?